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| Russon, T.; Elliot, M.; Sadekov, A.; Cabioch, G.; Correge, T.; De Deckker, P.. |
| The position of the southern boundary of the Pacific warm pool is shown to have been stable since the early Pleistocene, based upon a planktic foraminiferal Mg/Ca-derived reconstruction of subtropical sea surface temperature in the Coral Sea. This contrasts with previous reconstructions showing warm pool contraction from the north and east and means that the early Pleistocene warm pool was more hemispherically asymmetric than its present configuration. The latter was not established until similar to 1Ma, supporting a strengthening of the northern Hadley Cell, which was not replicated in its southern counterpart, prior to the Mid-Pleistocene Transition. |
| Tipo: Text |
Palavras-chave: Pacific warm pool; Mg/Ca paleothermometry; Mid-Pleistocene Transition. |
| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00144/25527/23672.pdf |
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| Jorry, Stephan J.; Droxler, Andre W.; Mallarino, Gianni; Dickens, Gerald R.; Bentley, Sam J.; Beaufort, Luc; Peterson, Larry C.; Opdyke, Bradley N.. |
| Since Last Glacial Maximum (23-19 ka), Earth climate warming and deglaciation occurred in two major steps (Bolling-Allerod and Preboreal), interrupted by a short cooling interval referred to as the Younger Dryas (12.5-11.5 ka B. P.). In this study, three cores (MV-33, MV-66, and MD-40) collected in the central part of Pandora Trough (Gulf of Papua) have been analyzed, and they reveal a detailed sedimentary pattern at millennial timescale. Siliciclastic turbidites disappeared during the Bolling-Allerod and Preboreal intervals to systematically reoccur during the Younger Dryas interval. Subsequent to the final disappearance of the siliciclastic turbidites a calciturbidite occurred during meltwater pulse 1B. The Holocene interval was characterized by a lack... |
| Tipo: Text |
Palavras-chave: Younger dryas event; Oxygen isotope records; Meltwater pulse 1a; Great barrier reef; Pacific warm pool; Carbonate platforms; Tropical atlantic; Surface salinity; Nicaragua rise; Caribbean sea. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/00079/19014/16592.pdf |
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